Artificial tooth.



M. F. HENLB.

ARTIFICIAL TOOTH.

APPLIGA'I'ION FILED FEB, 12, 1901;.

91 8,2 1 0. Patented Feb. 23, 1909.

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MA'IHIAS F. HENLE, OF LYONS, IOWA.

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Specification of Letters Patent.

Patented Feb. 23, 1909.

Application flied February 12, 1908. Serial No. 15.575.

To all whom it may concern:

Be it known that I, MA'rmAs F. HENLE, a citizen of the United States, residing at Lyons, in the county of Clinton and State of Iowa, have invented a new and useful Artificial Tooth, of which the following is a specification.

This invention relates generally to'artificial teeth, and particularly to an improved form of bridge work.

The objects of the invention are to simplify and strengthen the connection between the facing and the hacking, and in such manner that, .with a measurable decrease in the amount of gold usedin the backing, the stability of the assemblage between the arts will be substantiall increased, to acilitate the assemblage o the facing and the backing; to enable repairs to be done in the quickest possible time; and, generally, to improve the structural arrangement of the bridge work.

With the above and other objects in view, as will appear as the natureof the invention is better understood, the same consists in the novel construction and combination of parts of dental brid e work, as will be hereinafter fully described and claimed.

In the accompanying drawings formin a part of this specification, and in which like charactersof reference indicate correspond in parts, Figure 1 is a. view in elevation. tafienfrom the rear of a tooth, showing more particularly the anchor or shoe for holding the facing or tooth assembled with the backing. Fig. 2 is an edge view of the fucin shown in Fi 1. Fig. 3 is a perspective c etuil view of 1 1e anchor shown in Fi 1 and 2. Fig. 4 is a view in elevation o a section of backing. Fig. 5 is a view in vertical longitudinal section. on an enlarged scale, of a facing having the anchor shown applied thcrcto. Fig. (i is a transverse section through :1 Facing showing the hacking applied thereto. Fig. 7 is a view in rear elevation of a facing showing the same pro vided with two shoes or anchors. Fig. 8 is a view in clcrul'iou oi a suction of the backing to bc uscil in connection with the facing shown in Fig. 7. Fig. 9 is :1 vertical scctionul view lnkcu on the line 99 of Fig. 8. Fig. 10 is a trunsvcrsc scctional view through the facing shown in Fig. 7, with the backing applied thereto. Fig. 11 is a View in rear elcrution of one of the backings.

Referring to the drawn gs, and to Figs. 1

to 6 thereof, 1 designates the facing or tooth, 2 the anchor or shoe, and 3 the backing. It is to be understood that the improvements hereinafter described are adapted for use in positioning any desired number of teeth, and, as the procedure observed will be the same with one or more teeth,

only a single one is shown. It is also to be understood that the backing will be made. in lengths for mounting one or more teeth, and as this will be readily understood, only a suflicient length of such backing is shown as will be necessary to mount a single tooth. The anchor :2 carries two headed pins 4 which, as usual, are embedded in the facing at the time it is made, and the' anchor is bent at an angle to its length at a point adjacent to the lowermost pin, and its free end bears against the rear wall of the facing, as. clearly shown in Fig. 5. The remaining length of the anchor from the lowermost pin upward is disposed approximately par allel with the rear wall of the facing.

The backing 3, consists of a plate 5 and an anchor socket or sent 6, the latter bein stamped u to the proper shape and secure to the bacli of the plate by solder, and, in order to cause the lingual side of the backing to be smooth, thus to obviate the retention of food particles or of presenting a rough surface to the tongue, solderis flowed around the back of the socket, as shown at T in Figs. 10 and 11. The socket is exhibitcd us being an approximate open-sided rectangle in cross section, but this contour may be varied if found necessary or advantageous, without departing from the scope of the invention, or in the least detracting from its utility.

As shown in Fig. 9, the socket 6 is ap proximately wedge-shaped in longitudinal section, the thinnest edge being at t 1e lower portion of the backing, thus to cause the lingual 'side of the backing, at the edge of the teeth, to be but slightly thicker than the bucking itself, and this Wlll materially add to theromfort of the user of the bridgework.

As will be seen b reference to F i 4, the backing is provide with a longitudinal slot 8, of a width approximately that of the pins 4' and which extends from its upper ed 8 to a point adjacent to its lower edge, at w ich point it is laterally enlarged at 9 to permit entrance of the anchor the lower wall of the slot being inturned to bear against the as shown at 10, to

back wall of the socket,

with the backassist in positioning the facing (3 it will be ing.

*iy reference and thickness to Fig.

socket, the ob- 1 seen that a ing will slots 14,

\ the inner face of the anchor and the inner I wall of the backing on each side of the slot 8, it will be apparentthat upper pressure exerted facing, the more firmly it will be wedged in place, so that the material used for holding the facin combined with the backing need 'not be 0 an exceedingly hard character,

:, tooth or facing 11 has whereby the removal of the facing for any purpose wi l! be materially facilitated.

In the form, of the invention shown in Figs. 7 to 10, the only difference is that the two anchors secured to it and has but a single pin 13 for holding the greater the upon the tooth or 'each assembled with the facing, although two maybe employed if desired. Of course, where two anchors are employed, the backand the section 15 of the backing separating the two slots is held spaced from the socket 6 b a spacer it that is soldered in position. Vith this exception, the two devices are mode oi assemblage.

Alt 'dltllltittl tooth comprising a flat taeing carrying an anchor and a lint backing 1)l'()\'tllt(l with a T'shaped slot and with a socket secured lJztt'li of the slot, one end Wall of the slot being inturned to bear against the back wall of the socket to serve as a guide in assisting the positioning of the sin-- chor within the socket.

In testimony that I claim the foregoing as my own. 1 have hereto affixed my signature in the presence of two witnesses.

MATHIAS F. HENLE. W itnesses A. T. MlLLnn, Josnru H. Gasman.

he provided with two pin receiving 1' t the same in construction and 

